Their advisory comes in the wake of a deceased prairie dog testing positive for plague in Coconino County earlier this month. Also, in Maricopa County, officials found the presence of West Nile and St. Louis encephalitis viruses in mosquito pools.

Summer monsoon season can also foster tularemia, an infection transmitted person to person.

Game and Fish wildlife veterinarian Anne Justice-Allen says people should take precautions when outdoors, especially in the early morning or evening.

These include wearing long pants, long sleeves and using mosquito repellent.

Dust clouds loom above the store fronts at 32nd Street and Indian School Road in Phoenix in this photo taken by Cindy Ludington McNeely on Tuesday, Aug. 9, 2016.
Cindy Ludington McNeely/Special for The Republic

By 6 p.m., standing water was starting to pool in the eastbound lanes of the Deck Park Tunnel. The Arizona Department of Transportation advised drivers to use caution when moving through the area.
Arizona Department of Transportation

By 6 p.m., standing water was starting to pool in the eastbound lanes of the Deck Park Tunnel. The Arizona Department of Transportation advised drivers to use caution when moving through the area.
Arizona Department of Transportation